Vehicle navigation system and navigation method
US5638279A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 31, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Oct 31, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/096872
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A vehicle navigation system realizing a discrete display of the present position of a vehicle during a period from when the vehicle reaches a predetermined distance before an intersection until the vehicle passes the intersection. Especially, in a zone a short distance before the intersection, the present vehicle position mark is fixed at the center of the displayed intersection until the travelling direction of the vehicle is changed. Thereby, even when the accuracy of monitoring of the present position is relatively low, misindication, such that the present position is displayed as if the vehicle has passed straight through the intersection in spite of not having actually reached the intersection, is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.